/*
 * This file contains code from "C++ Primer, Fourth Edition", by Stanley B.
 * Lippman, Jose Lajoie, and Barbara E. Moo, and is covered under the
 * copyright and warranty notices given in that book:
 *
 * "Copyright (c) 2005 by Objectwrite, Inc., Jose Lajoie, and Barbara E. Moo."
 *
 *
 * "The authors and publisher have taken care in the preparation of this book,
 * but make no expressed or implied warranty of any kind and assume no
 * responsibility for errors or omissions. No liability is assumed for
 * incidental or consequential damages in connection with or arising out of the
 * use of the information or programs contained herein."
 *
 * Permission is granted for this code to be used for educational purposes in
 * association with the book, given proper citation if and when posted or
 * reproduced.Any commercial use of this code requires the explicit written
 * permission of the publisher, Addison-Wesley Professional, a division of
 * Pearson Education, Inc. Send your request for permission, stating clearly
 * what code you would like to use, and in what specific way, to the following
 * address:
 *
 *  Pearson Education, Inc.
 *  Rights and Contracts Department
 *  75 Arlington Street, Suite 300
 *  Boston, MA 02216
 *  Fax: (617) 848-7047
*/

#include <cstddef>

class CheckedPtr
{
public:
	// no default constructor; CheckedPtrs must be bound to an object
	CheckedPtr(int* b, int* e): beg(b), end(e), curr(b) { }

	// dereference and increment operations

	// dereference operator
	int& operator*();
	const int& operator*() const;

	// increment and decrement
	CheckedPtr operator++(int);     // postfix operators
	CheckedPtr operator--(int);
	// other members as before

	CheckedPtr& operator++();       // prefix operators
	CheckedPtr& operator--();
	// other members as before
private:
	int* beg;    // pointer to beginning of the array
	int* end;    // one past the end of the array
	int* curr;   // current position within the array
};
